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              5/2004 Kölling, A, Rässler, S. Editing and multiply imputing German estab- lishment panel data to estimate stochastic pro- duction frontier models 10/2004
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              5/2004 Kölling, A, Rässler, S. Editing and multiply imputing German estab- lishment panel data to estimate stochastic production frontier models 10/2004
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              Kölling, A, Rässler, S. Editing and multiply imputing German estab- lishment panel data to estimate stochastic production frontier models 10/2004
                 (xsd:string)
              
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